The whole point of homesteading is to become as self-sufficient as possible. That doesn’t mean you can’t buy products that were made by others, such as tools made in a factory.
For certain items, there’s simply no other choice. That’s why I said, “as self-sufficient as possible.” Meaning, if there’s something you can make on your own, you should.
This article from Homestead Dreamer lists 7 primitive tools that anyone can learn to make. Better yet, he includes videos that walk you through the process.